dma_zalloc_coherent broken with 57bf5a8963f80fb3828c46c3e3a5b2dd790e09a7

[Sebastian Ott]

Hi,

commit 57bf5a8963f80fb3828c46c3e3a5b2dd790e09a7 broke usage of dma
allocations specifying __GFP_ZERO by silently removing that flag.

Why should "the memory returned [] always be zeroed."?

Regards,
Sebastian